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Decrease In Quality With High Shutter Speeds?  
User currently offlineSovietjet From Bulgaria, joined Mar 2003, 2609 posts, RR: 16
Posted (5 years 11 months 3 weeks 4 days 11 hours ago) and read 3767 times:
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In August I went to the Chicago air show. During the first day I shot in aperture priority mode setting the aperture at f/8 for the most part. This resulted in shutter speeds around 1/500 which in the case of high speed passes resulted in some blurry images. So I decided the second day to shoot in shutter priority and set it to 1/1250. Almost all the images from this day resulted in the aircraft having a fuzzy appearance(sort of like grain), softness, and lack of fine detail and sharpness. This was contrary to what I expected from a high shutter speed. This wasn't the case with the pictures from the first day. Both days I used ISO100. Why is this happening?

I was using a 40D with Canon 100-400L. I can post some example images if it is needed.

11 replies: All unread, jump to last
 
User currently offlineGimliGlider From Germany, joined Jun 2006, 90 posts, RR: 0
Reply 1, posted (5 years 11 months 3 weeks 4 days 11 hours ago) and read 3757 times:

I've had the same experiences with Nikon D80, very frustrating when you try to shoot Mil. jets. Even as fast as 1/500 is too slow, and faster speeds give slight blur around the plane's extremities.


"You could attach that to your house and still go 0-60 in 5 seconds..."
User currently offlineScottieprecord From United States of America, joined Jul 2004, 1363 posts, RR: 10
Reply 2, posted (5 years 11 months 3 weeks 4 days 10 hours ago) and read 3745 times:

Well, shooting in shutter priority 1/1250 @ ISO100 with 100-400 L IS probably caused the aperture to open up to 5.6, and if you were shooting anywhere near 400mm, that's a pretty bad combination. This lens often doesn't perform too well at both extremities (long focal length and open aperture).

I'd recommend using Av around 8.0 with ISO100. You could even bump it up to 200 with the 40D; it performs pretty well with higher ISOs. Looking back at airshows this summer, this combination was still giving me a decent 1/640 (~1/1000 with ISO200). Other than a few autofocus problems, I was getting tack-sharp shots with the 40D+100-400 combo shooting F-15s and F-22s in Oshkosh.

Mike


User currently offlineNIKV69 From , joined Dec 1969, posts, RR:
Reply 3, posted (5 years 11 months 3 weeks 4 days 10 hours ago) and read 3736 times:

Shooting fighters close up is not easy. I would have to say if you are going to shoot at a low ISO like that for the speed you are trying to capture you better have a steady hand. IMO if you are going to try to capture something moving fast you need to boost up your ISO and use a faster lens. Jacking up the shutter speed will not work.

User currently offlineSovietjet From Bulgaria, joined Mar 2003, 2609 posts, RR: 16
Reply 4, posted (5 years 11 months 3 weeks 4 days 7 hours ago) and read 3700 times:
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Yes it was at f/5.6 and close to 40mm. I never knew it had quality problems with this combination. Does anyone know why this happens? I didn't raise ISO because it causes grain.

Quoting NIKV69 (Reply 3):
Jacking up the shutter speed will not work.

Good to know. So I shouldn't go above say 1/640 or so?


User currently offlineAKE0404AR From United States of America, joined May 2000, 2535 posts, RR: 45
Reply 5, posted (5 years 11 months 3 weeks 4 days 1 hour ago) and read 3641 times:



Quoting Sovietjet (Reply 4):
I didn't raise ISO because it causes grain.

Grain in pictures is not a bad thing, a.net may not like them, but it is not a bad shot.....ever shot with an ASA 800 film back in the days? ....then we are talking grain!

Vasco


User currently offlineWalter2222 From Belgium, joined exactly 9 years ago today! , 1299 posts, RR: 27
Reply 6, posted (5 years 11 months 3 weeks 4 days ago) and read 3627 times:



Quoting AKE0404AR (Reply 5):
Grain in pictures is not a bad thing,

 checkmark 

Quoting Scottieprecord (Reply 2):
You could even bump it up to 200 with the 40D; it performs pretty well with higher ISOs.

Indeed, why should we limit ourselves to ISO 100??

This shot was taken with ISO 320, F5.6 & T=1/25s with the 100-400mm @ 100mm (it was a dark, rainy day, light conditions were poor, it was before 8a.m.)

It looks a bit grainy, but it is not that bad (I know, it got accepted because this reg. was new to the database  Smile )


View Large View Medium
Click here for bigger photo!

Photo © Walter Van Bel



Best regards,

Walter



canon 340d ;-) - EFS10-22mm f/3.5-4.5 USM - EFS18-55mm - EF28-105mm f3.5/4.5 - EF100-400mm f4.5-5.6l is usm - ...
User currently offlineDvincent From United States of America, joined Jan 2007, 1744 posts, RR: 10
Reply 7, posted (5 years 11 months 3 weeks 4 days ago) and read 3607 times:
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I shoot at ISO 200 on nice days, mainly because that's my sensor's native ISO (same with the D300). But I've shot up to ISO 800 with very little visible noise, and it's so easy to clean up without causing noise reduction problems that I do not hesistate to go up to 800.

You'll need a fast shutter speed to freeze the action and prevent motion blur, of course, but if you can get 1/1250 reliably at ISO 400 while keeping your aperture at f/8 you should be able to get some keepers.

Even then you still have to have good panning technique to follow the action.



From the Mind of Minolta
User currently offlineNIKV69 From , joined Dec 1969, posts, RR:
Reply 8, posted (5 years 11 months 3 weeks 3 days 23 hours ago) and read 3587 times:



Quoting Sovietjet (Reply 4):
Good to know. So I shouldn't go above say 1/640 or so?

I think replies 5,6 and 7 have hit the nail on the head. 7 especially. For something moving that fast in abscence of a really fast lens you will have to raise your ISO a little and work on your technique for holding and panning. This way you can get good results with a shutter speed that is not super high.


User currently offlineCaliSam From United States of America, joined Sep 2008, 55 posts, RR: 0
Reply 9, posted (5 years 11 months 3 weeks 3 days 15 hours ago) and read 3525 times:

Wow this has been an extremely helpful thread. I appreciate all the info!

This past weekend I was at the Salinas Air Show in Cali and there was bad lighting, but it didn't explain the terrible quality of the pics that came out. It turns out I made the same mistake, I was shooting from 400 to 500mm at 5.6 and ISO 100. Lots of bad quality pics, most being soft and grainy.
Example of one below.. where I'm disappointed because it could've a much better pic




So shooting at 8.0 and iso 200 would really help? (assuming i have a steady arm)


User currently offlineMaiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 50
Reply 10, posted (5 years 11 months 3 weeks 3 days 11 hours ago) and read 3491 times:



Quoting NIKV69 (Reply 3):
Shooting fighters close up is not easy.

and how would you know?  cheeky  Sorry, I couldn't resist.  Silly


User currently offlineNIKV69 From , joined Dec 1969, posts, RR:
Reply 11, posted (5 years 11 months 3 weeks 3 days 11 hours ago) and read 3484 times:



Quoting Maiznblu_757 (Reply 10):
Sorry, I couldn't resist

Of course not, why would we ever expect mature behavior from you?  crazy 


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